Omron HR-310 - Manual (Page 25)

25
BATTERIES
The chest belt uses a CR2032 3V battery, which has already been
installed. If the heart rate signals become unsteady or stop your chest
belt battery may need replacing.
To replace the chest belt battery:
1. Using a coin, twist the battery door counter-clockwise until it
clicks out of place.
2. Replace the old battery and close the battery door by twisting it
clockwise until it is fi rmly in place.